Originally Posted By: OVERKILL
For the winter, you probably would have just been best to change the oil, given the blend currently in the sump.
The oil in there IS going to be changed before the winter comes, it just brings us back to the issue of if it's 5W-30.
Most likely, though, I was in there once, a while ago.. I saw a lot of NAPA and Valvoline (white bottle) on his shelves.. I don't think he puts in oil from a drum. It said either 5W-30 or 10W-30 on the bottles, and yes there was plenty of 10W-40 laying around.
A couple of years ago, before my 5W and 0W-20 fixation that I've tried to apply to just about any vehicle that doesn't obviously not need it (like an E46 M3 from BMW..) I was very vocal, also with my Mom and Uncles, about "How on earth putting 10W-40 in that truck was BAD." Then I heard my Uncle drop in the "with Lucas" and I was like, "!!!!!!" This planted the seed to "secret" oil changes... So, at first, yeah, I might have went 5W-30. Then I lived away for a few years.
I come back and the truck is in good shape, and it took us to where I bought the 5W-20 instead of the 5W-30 and changed it. The new oil also looks fine, and it even didn't look that weird color when I put it in the waste oil receptacle at Advance Auto yesterday.. so all indications point to the motor being fine, and P0420 has stayed off for emissions, yes.
Though I did this near the end of the OCI and Mom will probably take it over there for a change, "before the inspection." Maybe she will let me put that one hubcap on, too. As long as it doesn't fly off...
OVERKILL, how much confidence should I have that he will put in 5W-30, "as he says he does when he tells Mom he puts in 'the thin stuff?'" I could set aside some of my resources to capture that oil, re-use it in other places like the Honda and Blazer, and put, oh.. a different oil in the Envoy XL, sure.. but, are you saying that I don't need to do all that?
Should we have faith that 5W-30 will be in there for the winter after seeing the technician????????????? OR can you se how I would want to KNOW this???????
No MMO next time, I also did that knowing the end of the oil was near...